/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkAutoBlitterChoose_DEFINED
#define SkAutoBlitterChoose_DEFINED

#include "include/private/base/SkMacros.h"
#include "src/base/SkArenaAlloc.h"
#include "src/core/SkBlitter.h"
#include "src/core/SkDrawBase.h"
#include "src/core/SkRasterClip.h"
#include "src/core/SkSurfacePriv.h"

class SkMatrix;
class SkPaint;
class SkPixmap;

class SkAutoBlitterChoose : SkNoncopyable {
public:
    SkAutoBlitterChoose() {}
    SkAutoBlitterChoose(const SkDrawBase &draw, const SkMatrix *ctm, const SkPaint &paint, bool drawCoverage = false)
    {
        this->choose(draw, ctm, paint, drawCoverage);
    }

    SkBlitter *operator->()
    {
        return fBlitter;
    }
    SkBlitter *get() const
    {
        return fBlitter;
    }

    SkBlitter *choose(const SkDrawBase &draw, const SkMatrix *ctm, const SkPaint &paint, bool drawCoverage = false)
    {
        SkASSERT(!fBlitter);
        fBlitter = draw.fBlitterChooser(draw.fDst, ctm ? *ctm : *draw.fCTM, paint, &fAlloc, drawCoverage,
            draw.fRC->clipShader(), SkSurfacePropsCopyOrDefault(draw.fProps));
        return fBlitter;
    }

private:
    // Owned by fAlloc, which will handle the delete.
    SkBlitter *fBlitter = nullptr;

    SkSTArenaAlloc<kSkBlitterContextSize> fAlloc;
};

#endif
